Custom algorithm used to generate an int from a series of bytes. - Java java.lang

Java examples for java.lang:byte Array to int

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Description

Custom algorithm used to generate an int from a series of bytes.

Demo Code

/*/*from ww w . j av  a  2 s  .com*/
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        byte[] bytes = new byte[] { 34, 35, 36, 37, 37, 37, 67, 68, 69 };
        System.out.println(toInt(bytes));
    }

    /**
     * Custom algorithm used to generate an int from a series of bytes.
     * <p/>
     * NOTE : this is different than interpreting the incoming bytes as an int value!
     *
     * @param bytes The bytes to use in generating the int.
     *
     * @return The generated int.
     */
    public static int toInt(byte[] bytes) {
        int result = 0;
        for (int i = 0; i < 4; i++) {
            result = (result << 8) - Byte.MIN_VALUE + (int) bytes[i];
        }
        return result;
    }
}

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